package com.lqq.springcloud.controller;

import com.lqq.springcloud.entities.CommonResult;
import com.lqq.springcloud.entities.Payment;
import com.lqq.springcloud.lb.LoadBalancer;
import com.lqq.springcloud.lb.MyLB;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
public class OrderController {

    //public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;


    //getForObject
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class, id);
    }

    //getForEntity
    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class, id);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        }else {
            return new CommonResult<>(444, " 查询失败");
        }
    }

    //postForObject
    @PostMapping("/consumer/payment/create")
    public CommonResult<Payment> creaat(@RequestBody Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }


    //postForEntity
    @PostMapping("/consumer/payment/create2")
    public CommonResult<Payment> creaat2(@RequestBody Payment payment) {

        ResponseEntity<CommonResult> entity =
                restTemplate.postForEntity(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        } else {
          return new CommonResult<>(444,"写入失败！");
        }
    }


    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private LoadBalancer loadBalancer;

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB() {

        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");

        ServiceInstance serviceInstance = loadBalancer.instances(instances);

        URI uri = serviceInstance.getUri();

        return restTemplate.getForObject(uri + "/payment/lb", String.class);

    }

    // ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }

}
